The variation of medium pore diameter and porosityfactor is in accordance with that of the pore volume, showing a high permeability of low rank coal reservoirs.
中值孔径、孔隙率的变化特征与孔容一致，预示了低煤级煤储层较高的基岩渗透率。
2
This paper deals with mechanism of the decrease of the mobility of a polymer solution when it flows through a porous medium by means of resistance factor and porosityfactor.
本文从阻力系数与孔隙系数角度出发，研讨了聚合物溶液在砂岩孔隙介质中降低流体流动度的机理。
3
Relative porosityfactor value can be used to characterize the relation between the molecular size of the polymer and the its retention in the flow of polymer solution through porous media.